Simply, go to Google Chrome Options from the little drop down menu in the browser itself. You will soon be looking at Themes- Reset to default theme or Get themes.
Get themes for Chrome browser will redirect you to https://tools.google.com/chrome/intl/en/themes/index.html if not go to this link manually and just hit the theme you like your default chrome browser to look like.
My word: I couldn’t see something like switch between themes or select already downloaded themes. There is only option to revert back to default chrome monotonous theme.
The screenshot shows installed theme ‘Star Gazing’
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